Images 13.07.2026 · Istanbul University Observatory Solar Observations

Solar Images Monday, 13 July 2026

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Photosphere sunspot drawing and RDS evaluation

High-resolution scan (3220 px)

Time: 06:30 UT
Observer: Burçin TANIK
g: 3
f: 7
R: 37
Seeing: 3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AX_ – 1

Group 2 · CKO – 5

Group 3 · HH_ – 1

RDS data file (.gzd)

[Gözlem]
Tarih=13.07.2026
Saat=06:30
Gözlemci=Burçin TANIK
KontrolEden=Olcay PLEVNE
Durumaçısı=2.83
Enlemaçısı=4.13
Boylamaçısı=267.99
Boylamfark=3
GKalite=3
GDurum=B.A
Kuzeyaçısı=-0.7
Sırano=20511
AyRasatNo=11
RasatÖnceki=12.07.2026
RasatSonraki=14.07.2026

[Leke Grupları]
Grupsayısı=3:1:2
LekeSayısı=7:1:6
RölatifSayı=37:11:26
01=AX_ 01 +08.912 +28.957 296.947 -1.000 0000 0 +08.912 +28.957 +08.912 +28.957
02=CKO 05 -08.900 +32.345 300.335 25.720 0000 0 -06.116 +35.230 -09.901 +29.668 -07.503 +33.718 -09.300 +30.510
03=HH_ 01 -06.173 -77.354 190.636 +0.000 0000 0 -05.134 -75.890 -07.212 -78.818 -06.173 -76.390 -06.173 -78.318

20260713.gzd

Chromosphere (H-α) FITS frames

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2026/20260713_bto · BTO · 2 frames · 42.9 MB · 06:45:52–06:51:02 UT

06:51:02 UT · 30 ms

06:45:52 UT · 60 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.